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A hysteresis model considering microstructural feature distribution

Liu, Jun ORCID: and Davis, Claire 2016. A hysteresis model considering microstructural feature distribution. Presented at: 42nd Annual Review of Progress in Quantitative Nondestriuctive Evaluation, Minneapolis, MN, USA, 26-31 July 2015. Published in: Chimenti, Dale E. and Bond, Leonard J. eds. AIP Conference Proceedings. , vol.1706 (1) AIP Publishing, 090018. 10.1063/1.4940555

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A modified Preisach model with the Preisach function formulated based on microstructural feature distribution and probability theory, has been developed to model the major/minor loops of ferromagnetic steels. Ferrite grains and precipitates within the grains have been selected as the two independent microstructural features to demonstrate the model. The distribution of grain size, precipitate size and inter-particle spacing are introduced to formulate the Preisach function. Close fits between the modelled and measured major loops have been achieved for two ex-service power plant steels, which have ferritic microstructures containing carbide particles, for a preliminary validation of the model. The model has proved capable of modelling both major and minor loops considering microstructural feature distributions.

Item Type: Conference or Workshop Item (Paper)
Date Type: Published Online
Status: Published
Schools: Engineering
Publisher: AIP Publishing
ISSN: 0094-243X
Last Modified: 09 Nov 2022 09:54

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